Re: toolchain/49425: internal compiler error compiling riscv userland

[Matt Thomas <matt%3am-software.com@localhost>]

> On Dec 1, 2014, at 12:44 AM, Dennis Ferguson <dennis.c.ferguson%gmail.com@localhost> wrote:
> 
> 
> On 1 Dec, 2014, at 16:10 , Martin Husemann <martin%duskware.de@localhost> wrote:
>> OK, so the list of files differs (see toolchain/49434) and -O1 vs -O0;
>> these are likely different MD gcc bugs.
>> 
>> Reinoud or you should report this upstream.
> 
> Yes, though for RISC-V compiler it is a bit ambiguous who the upstream
> is.  As far as I can tell the RISC-V people have only done their MD for
> gcc 4.6.something and 4.9, so it may be Matt(??) who moved this into 4.8.3.
> If I can get one of the supported RISC-V compilers to build I can try it
> to see if it gets the same ICE and report that, otherwise the workaround
> may need to stay until NetBSD moves to a gcc version they also support.

You might also try using the -fno-builtin-<...> to disable the pattern.

I saw that with the gcc4.9 one as well.

I first tried to get <riscv/lock.h> to use the C11 atomic but the compiler blew chuncks.